Question : Backup of first storage group fails

I have a 2003 SBS that is failing a full server backup using Backup Exec 11d with the message in the log:

e0008488 - Access is denied.
Backup- \\DC1\Microsoft Information Store\First Storage Group V-79-57344-33928 - Access is denied.

Can anyone help with this message and how I should resolve?

Answer : Backup of first storage group fails

Maybe this one could help::
http://www.experts-exchange.com/Storage/Backup_Restore/Backup_Exec/Q_22687909.html